Electrically-driven machine for tilling the ground.



W. WORT MANN. ELEGTRIGALLY DRIVEN MACHINE FOR TILLING THE GROUND.

APPLICATION FILED JULY 18,1912.

Patented Jan. 7, 1913.

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ELECTIEICALLY-DEWEN MACHINE FGR TELLING- TEE G'BIGUND.

a sence.

Specification of Letters Eatent.

Patented tan. a. rare.

Apnlication illed' uly 18, 1912. Serial No. 710,247.

current being supplied by a cable which. is

wound upon and unwound fromthe mamoved.

chine. I

According to my invention T mount the cable-drum to swivel about a vertical axis in the" frame of the truck carryin the op} erative tools, in this way I attain that the machine together with its tools can turn at the end of the field without the cabledrum moving out of its position. Consequently, when the machine is slued the cable cannot become entangled and can readily unwind without any trouble when going backward.

One illustrative embodiment of my invention is represented by wayofexample in the accompanying drawing, wherein Figure 1 is an elevation showing a machine of my improved construction, and Fig. 2 is a top plan view thereof after the cable-drum and its supports have been re- Referring to the drawing, a designates the frame of the truck runningon the wheels 5 which are preferably driven by electric motors, not shown. The operative tool is shown as a rollerl d, but hoes, harrows, plowshares or the like may be mounted in the frame instead thereof if desired.

e designates auxiliary wheels which are journaled in a separate frame 7 carried by the frame 2', to be hereinafter referred to and while the machine is operating are located so high that they do not contact with the ground. When the machine is to turn and be shifted laterally a distance equal to the breadth of the strip of land which has been worked these auxiliary. wheels are lowered and the wheels Z are relieved. lln

the illustrative embodiment this is done bymeans of spindles 76 whose screw-threaded g on the spindle g carrying the hand wheels 9. The arrangement is such that after the auxiliary wheels 6 have been placed on the ground the rest of the machine with the exception of the frame f is lifted. The transverse motion of the entire machine can take place on the wheels 6 which rotate in planes displaced 90 relative to those in which the wheelsb rotate.

The cable-drum 2, is journaled .in a frame a mounted to swivel in the frame a. This drum is for winding upthe electric cable paid out during the operation of the machine. The framea together with the tool (i mounted therein can be slued roundabout the frame 2' of the cable-drum without the latter changing its position.

I claim :I

1. In an electrically-driven machine for tilling the land, the combination with a wheeled truck, of means for winding up and paying out an electric cable mounted to rotate about a vertical axis on the truck and.

means permitting the change of direction of the truck about said vertical axis.

2. In an electrically-driven machine for tilling the land, the. combination with a wheeled truck, of means for winding up and paying out an electric cable mounted on a frame to. rotate about a vertical axis on the truck, a wheeled frame vertically adjustable in the first mentioned frame, and means mounted on the first mentioned frame forraising and lowering the wheeled frame,

the planes of rotation of the wheels in the' frame being normally located at right angles to the planes of rotation of the wheels of thetruck.

3. In an electrically-driven machine for tilling the land, the combination with a wheeled truck, of a frame mounted to angles to the wheels of the truck, threaded name to this specification in the presence spindles mounted on the former frame and of two Witnesses.

screwed at one end into the wheeled frame d a A gears fast on the other ends qf the spindles: WILHELM WORTNN' 5 and gearing provided with hand-Wheels Witnesses": I

meshing with the said ears. JEAN GRUND, In testimony whereo I have signed my -CARL GRUND. 

